EP2113357B1 - Form für Reifen - Google Patents

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Publication number
EP2113357B1
EP2113357B1 EP20090003924 EP09003924A EP2113357B1 EP 2113357 B1 EP2113357 B1 EP 2113357B1 EP 20090003924 EP20090003924 EP 20090003924 EP 09003924 A EP09003924 A EP 09003924A EP 2113357 B1 EP2113357 B1 EP 2113357B1
Authority
EP
European Patent Office
Prior art keywords
mold
core
shim
block
slit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20090003924
Other languages
English (en)
French (fr)
Other versions
EP2113357A1 (de
Inventor
Keiji Shimizu
Toru Okano
Satoru Kinuhata
Masahiko Kanda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Publication of EP2113357A1 publication Critical patent/EP2113357A1/de
Application granted granted Critical
Publication of EP2113357B1 publication Critical patent/EP2113357B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/0609—Constructional features of the moulds the moulds being made of a plurality of laminations, e.g. thin plates, adjacent one another, so as to create the moulding cavity

Definitions

  • the present invention relates to a mold to be used in a tire vulcanizing process. More particularly, the present invention relates to a mold having a slit for discharging air.
  • a mold In a tire vulcanizing process, a mold is used. A two phase mold and a two piece mold can be used in the vulcanizing process.
  • a preformed raw cover is put into the mold.
  • the raw cover is pressurized and heated in a cavity surrounded by the mold and a bladder.
  • a rubber composition of the raw cover flows in the cavity.
  • a rubber causes a crosslinking reaction by the heating so that the tire is obtained.
  • a general mold has a vent hole. The air is discharged through the vent hole.
  • the two phase mold includes an arcuate tread segment. A large number of segments are arranged so that a ring-shaped cavity surface is formed.
  • the segment is obtained by gravity casting or low pressure casting in which a die is used. In some cases, the segment is obtained by precision casting (so-called die casting) using a metal die.
  • a surface of a segment which abuts on an adjacent segment is referred to as a "divided surface".
  • a very small gap is generated between the divided surface and another divided surface which is adjacent to the divided surface. Through the gap, air is discharged. By the discharge, a bare is prevented.
  • Japanese Laid-Open Patent Publication No. 2-295706 Japanese Laid-Open Patent Publication No. 2005-225094 and Japanese Laid-Open Patent Publication No. 2006-508833 have disclosed a mold for a tire which has a slit on a cavity surface. In the mold, air is discharged through the slit.
  • Japanese Laid-Open Patent Publication No. 2007-144997 Japanese Laid-Open Patent Publication No. 2007-237708 and Japanese Laid-Open Patent Publication No. 2008-87428 have disclosed a mold for a tire which has a first metal piece and a second metal piece.
  • a molten metal is caused to flow between two first metal pieces which are adjacent to each other.
  • the metal coagulates so that the second metal piece is formed.
  • air is discharged through a slit between the first and second metal pieces.
  • the rubber composition flows into the vent hole so that a spew is generated.
  • the spew damages an appearance of the tire.
  • the spew can be removed by cutting, a great deal of time and labor is required for the cutting operation.
  • the rubber composition causing a crosslinking reaction remains in the vent hole.
  • the rubber composition remains so that the air is inhibited from being discharged and the bare is thus caused.
  • cleaning for the vent hole is carried out. A great deal of time and labor is required for the cleaning.
  • the air in the vicinity of the divided surface is discharged sufficiently.
  • the bare is apt to be caused because the air remains.
  • the mold disclosed in each of the Japanese Laid-Open Patent Publication No. 2-295706 , the Japanese Laid-Open Patent Publication No. 2005-225094 and the Japanese Laid-Open Patent Publication No. 2006-508833 has a complicated structure. In the mold, precision in a width of the slit is poor.
  • a mold having the features of the preamble of claim 1 is known from JP2009-023231 and also from JP2005-225094 .
  • a mold for a tire according to the present invention includes a block having an internal surface forming a cavity surface.
  • the block has a base and a core subjected to enveloped casting by the base.
  • the core includes a plurality of plate-shaped pieces which is arranged and a shim interposed between two adjacent pieces. A slit is formed between the two adjacent pieces by the shim.
  • each piece should have a hole.
  • a plurality of pieces is fastened by a bar member penetrating through the hole. It is preferable that a coefficient of thermal expansion of the bar member should be smaller than that of the piece.
  • a mold 2 shown in Figs. 1 and 2 includes a large number of tread segments 4, a pair of side plates 6 and a pair of bead rings 8.
  • a planar shape of the segment 4 is a substantially circular arc.
  • a large number of segments 4 are disposed like a ring.
  • the number of the segments 4 is usually equal to or greater than three and equal to or smaller than twenty.
  • the side plate 6 and the bead ring 8 are substantially ring-shaped respectively.
  • the mold 2 is a so-called "two phase mold".
  • Fig. 3 is a perspective view showing the segment 4 of the mold 2 in Fig. 1 .
  • an X direction indicates a radial direction and a Y direction indicates an axial direction.
  • a circumferential direction is orthogonal to the X and Y directions.
  • the segment 4 is constituted by a holder 10 and a block 12.
  • the holder 10 is formed of steel or an aluminum alloy.
  • the block 12 is attached to the holder 10.
  • a plurality of blocks 12 arranged in the circumferential direction may be attached to the holder 10.
  • the block 12 includes a cavity surface 14.
  • the cavity surface 14 includes a protruded portion 16 and a recess portion 18.
  • the protruded portion 16 corresponds to a groove of a tread of a tire.
  • a tread pattern is formed on the tire.
  • Shapes of the protruded portion 16 and the recess portion 18 are properly determined corresponding to the tread pattern. In Fig. 2 , the protruded portion 16 and the recess portion 18 are not shown.
  • Fig. 4 is an enlarged sectional view showing a part of the block 12 in the segment 4 of Fig. 3 .
  • the block 12 is constituted by a base 20 and a core 22.
  • the base 20 surrounds the core 22.
  • the base 20 is formed by a metallic material.
  • a typical metallic material is an aluminum alloy.
  • the core 22 is constituted by a piece 24, a bolt 26 (a bar member), a nut 28 and a shim 30.
  • the core 22 includes thirteen pieces 24 (see Fig. 3 ). The number of the pieces is properly determined.
  • the piece 24 is plate-shaped.
  • the piece 24 is formed by a metallic material.
  • a typical metallic material is an aluminum alloy.
  • the piece 24 has a hole 32.
  • the bolt 26 penetrates through the hole 32.
  • the bolt 26 is formed by a metallic material.
  • a metallic material having a smaller coefficient of thermal expansion than a coefficient of thermal expansion of the metallic material of the piece 24 is suitable for the bolt 26.
  • a male screw is formed on each of upper and lower ends of the bolt 26. The male screw is engaged into the nut 28. By fastening the nut 28, the thirteen pieces 24 are bound. The end of the bolt 26 and the nut 28 are buried in the base 20.
  • Fig. 5 is a perspective view showing the shim 30 of the block 12 in Fig. 4 .
  • the shim 30 is formed by a metallic material.
  • a typical metallic material is stainless steel.
  • the shim 30 takes a shape of a thin plate.
  • a planar shape of the shim 30 is substantially rectangular.
  • the rectangular shim 30 can be fabricated easily.
  • An arrow T in Fig. 5 indicates a thickness of the shim 30.
  • the shim 30 is interposed between two pieces 24 which are adjacent to each other.
  • the nut 28 is fastened so that the piece 24 presses the shim 30.
  • a slit is formed between the two pieces 24 which are adjacent to each other.
  • the slit is extended in radial and circumferential directions.
  • the slit reaches the cavity surface 14.
  • the core 22 includes twelve shims 30.
  • Fig. 6 is a perspective view showing the piece 24.
  • the piece 24 is plate-shaped.
  • the piece 24 has a front face 34 and a back face 36.
  • the back face 36 takes a shape of a circular arc.
  • the piece 24 has six holes 32. Three holes 32a are positioned on the front face 34 side and three holes 32b are positioned on the back face 36 side.
  • the number of the holes 32 is properly determined. It is preferable that the number of the holes 32 should be equal to or greater than four and be equal to or smaller than twenty.
  • FIG. 7 is a perspective view showing the core 22.
  • Fig. 8 is a sectional view taken along a VIII line in Fig. 7 .
  • Fig. 9 is a sectional view taken along an IX line in Fig. 7 .
  • the shim 30 is disposed between the pieces 24 and 24.
  • a slit is formed on the core 22.
  • the piece 24 and the shim 30 are integrated by the bolt 26 and the nut 28.
  • the shim 30 is disposed to keep away from the bolt 26. In other words, the bolt 26 does not penetrate through the shim 30.
  • the shim 30 does not need to have a hole for the bolt 26. Therefore, the shim 30 can be fabricated easily. By fastening the nut 28, the piece 24 presses the shim 30. Therefore, the shim 30 can be prevented from slipping out of the piece 24. In respect of a prevention of the slip-off, it is preferable that a fastening force of the nut 28 should be equal to or greater than 2 N ⁇ m and be equal to or smaller than 7 N ⁇ m.
  • the core 22 is inserted into a die and a molten metal is caused to flow into a surrounding part of the core 22.
  • a runner of the molten metal is devised so that the piece 24 can be prevented from being molten by the molten metal.
  • the molten metal coagulates in the die.
  • the base 20 is formed.
  • Fig. 10 is a sectional view showing the block 12.
  • the base 20 covers back, upper and lower surfaces of the core 22.
  • the core 22 is subjected to enveloped casting by the base 20.
  • the core 22 is firmly fixed to the base 20.
  • the block 12 is cut along a two-dotted chain line 38 in Fig. 10 .
  • a left part from the two-dotted chain line is discarded. Accordingly, three bolts 26a are also discarded.
  • a cut surface on a right side (the side of back face 36) from the two-dotted chain line 38 is subjected to a cut processing.
  • the cavity surface 14 having a concavo-convex pattern is formed.
  • a contour of the piece 24 which has not been subjected to the cut processing is shown in a two-dotted chain line.
  • the block 12 is attached to the holder 10 (see Fig. 3 ) so that the segment 4 is obtained.
  • a concavo-convex pattern is directly engraved.
  • a typical cut processing is carried out by means of a tool.
  • the cut processing may be carried out by a high energy density processing.
  • Specific examples of the high energy density processing include an electrochemical processing, a discharge processing, a wire cut discharge processing, a laser processing and an electron beam processing. Since the concavo-convex pattern is directly engraved, a degree of freedom of a shape of the concavo-convex pattern is high.
  • the concavo-convex pattern has high precision in a dimension.
  • a raw cover 40 (an unvulcanized tire) is obtained by preforming.
  • the raw cover 40 is put into the mold 2 in a state in which the mold 2 is opened and a bladder contracts.
  • the mold 2 is fastened so that the bladder expands.
  • the raw cover 40 is pressed against the cavity surface 14 of the mold 2 by the bladder and is thus pressurized.
  • the raw cover 40 in this state is shown in Fig. 2 .
  • the raw cover 40 is heated.
  • the rubber composition flows.
  • the rubber causes a crosslinking reaction by the heating so that the tire is obtained.
  • a step of pressurizing and heating the raw cover 40 is referred to as a vulcanizing step.
  • an insert core may be used.
  • the slit is exposed to the cavity surface 14.
  • air between the raw cover 40 and the cavity surface 14 is moved through the slit.
  • the air reaches a divided surface 42 (see Fig. 3 ) and is discharged. Air in a region provided apart from the divided surface 42 can be moved to the divided surface 42 through the slit. By the movement and discharge of the air, a bare is prevented.
  • the core 22 is firmly fixed to the base 20. Therefore, precision in a dimension of the slit is high.
  • the air can be reliably discharged.
  • the mold 2 having no vent hole the air can be sufficiently discharged.
  • the mold 2 having no vent hole a tire having no spew is obtained. The tire is excellent in an appearance and an initial gripping performance. It is also possible to provide a small number of vent holes together with the slit.
  • the mold 2 having no concavo-convex pattern, it is possible to obtain a slick tire or a plain tire. In the slick tire and the plain tire, similarly, the spew is suppressed. A surface of the plain tire is cut so that the concavo-convex pattern is formed. Since a small number of spews are formed, the plain tire can be cut easily.
  • Fig. 11 is an enlarged sectional view showing a part of the block 12 in Fig. 4 .
  • an arrow L1 indicates a distance from the inner end 42 of the shim 30 to the back face 36 of the piece 24 and an arrow L2 indicates a distance from the cavity surface 14 to the back face 36.
  • the distance L1 is sufficiently smaller than the distance L2.
  • the shim 30 is positioned in the vicinity of the back face 36, and the cavity surface 14 and the inner end 42 of the shim 30 are provided apart from each other.
  • the shim 30 does not inhibit the movement of the air through the slit.
  • a ratio (L1/L2) is preferably equal to or lower than 0.5 and is more preferably equal to or lower than 0.3.
  • the ratio (L1/L2) is preferably equal to or higher than 0.1.
  • the number of the slits in the core 22 should be equal to or greater than five. In the core 22 having at least five slits, the air can be sufficiently discharged. From this viewpoint, it is more preferable that the number of the slits should be equal to or greater than ten. In order to easily fabricate the core 22, the number of the slits is preferably equal to or smaller than forty and is more preferably equal to or smaller than thirty.
  • the segment 4 shown in Fig. 3 includes thirteen pieces 24 and twelve shims 30 as described above. Accordingly, the number of the slits is twelve.
  • an arrow P indicates a width of the slit in the cavity surface 14. It is preferable that the width P should be equal to or greater than 0.005 mm. By the slit having the width P of 0.005 mm or more, the air is sufficiently discharged. From this viewpoint, it is more preferable that the width P should be equal to or greater than 0.02 mm. It is preferable that the width P should be equal to or smaller than 0.09 mm. The rubber composition flows, with difficulty, into the slit having the width P which is equal to or smaller than 0.09 mm. Accordingly, a tire having an excellent appearance can be obtained. From this viewpoint, the width P is more preferably equal to or smaller than 0.07 mm and is particularly preferably equal to or smaller than 0.05 mm.
  • the width P tends to be smaller than a thickness T of the shim 30 (see Fig. 5 ). Due to the fact that the shim 30 is positioned in the vicinity of the back face 36, similarly, the width P tends to be smaller than the thickness T.
  • the thickness T is preferably equal to or greater than 0.02 mm and is more preferably equal to or greater than 0.03 mm.
  • the thickness T is preferably equal to or smaller than 0.10 mm, is more preferably equal to or smaller than 0.08 mm and is particularly preferably equal to or smaller than 0.06 mm.
  • a deposit sticks to the cavity surface 14.
  • the deposit deteriorates quality of the tire. It is necessary to remove the deposit.
  • a shot blasting is employed for the removal.
  • a corner of the piece 24 causes a minute plastic deformation.
  • a burr is generated so that the slit is clogged in some cases.
  • a temperature of the mold 2 in which the clogging is caused is raised.
  • the piece 24 expands.
  • the bolt 26 is formed by a material having a small coefficient of thermal expansion. Therefore, the expansion of the bolt 26 with the rise in the temperature is small. Accordingly, the piece 24 expands in a state in which it is fastened by the bolt 26.
  • a width W of the piece 24 should be equal to or greater than 5 mm. It is preferable that the width W should be equal to or smaller than 30 mm. In the piece 24 having the width W of 30 mm or less, a slit having an excessively great width P can be prevented from being generated by the rise in the temperature.
  • the core 22 may include a plurality of pieces 24 having different widths W from each other and may include a plurality of pieces 24 having identical widths W to each other. When the width P of the slit is excessively great, the width P may be reduced by shot blasting.
  • the segment 4 of the mold is constituted by the holder 10, the base 20 and the core 22 as described above.
  • the holder 10 may be omitted and the base 20 may also function as the holder 10.
  • Fig. 12 is a plan view showing a mold 46 for a tire according to another embodiment of the present invention.
  • the mold 46 is a so-called "two piece mold”.
  • the mold 46 has a lower mold half 48 and an upper mold half.
  • Fig. 12 shows only the lower mold half 48.
  • the upper mold half has a shape obtained by inverting a shape of the lower mold half 48.
  • the mold 46 has a large number of blocks 50 and a shell 52.
  • the block 50 is fixed to the shell 52.
  • the block 50 takes a shape of a circular arc. A large number of blocks 50 are disposed like a ring.
  • Fig. 13 is an enlarged perspective view showing the block 50 of the mold 46 in Fig. 12 .
  • the block 50 has a cavity surface 54.
  • the cavity surface 54 has a protruded portion 56 and a recess portion 58.
  • the protruded portion 56 corresponds to a groove of a tread of the tire.
  • a tread pattern is formed on the tire.
  • Fig. 14 is an enlarged sectional view showing a part of the block 50 in Fig. 13 .
  • the block 50 is constituted by a base 60 and a core 62.
  • the base 60 surrounds the core 62.
  • the base 60 is formed by a metallic material.
  • a typical metallic material is an aluminum alloy.
  • the core 62 is constituted by a piece 64, a bolt 66 (a bar member), a nut 68 and a shim 70.
  • the core 62 has four pieces 64.
  • the pieces 64 are arranged in an axial direction.
  • the piece 64 has a hole 72.
  • the bolt 66 is inserted through the hole 72.
  • the nut 68 is screwed into the bolt 66.
  • the shim 70 is interposed between two adjacent pieces 64.
  • a slit is formed between the two adjacent pieces 64.
  • the slit is extended in radial and circumferential directions. The slit reaches the cavity surface 54.
  • the core 62 is inserted into a die. A molten metal is caused to flow into a surrounding part of the core 62. The molten metal coagulates in the die. By the coagulation, the base 60 is formed. By the coagulation, the core 62 is subjected to enveloped casting by the base 60. Thus, it is possible to obtain the block 50 having the base 60 and the core 62. By the enveloped casting, the core 62 is firmly fixed to the base 60. The block 50 is subjected to a cut processing so that the cavity surface 54 is formed. In Fig. 14 , a contour of the piece 64 which has not been subjected to the cutting operation is shown in a two-dotted chain line.
  • the mold according to the present invention is suitable for manufacturing various tires.
  • the above description is only illustrative and various changes can be made without departing from the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Claims (5)

  1. Form (2, 46) für einen Reifen, die einen Block (12, 50) umfasst, der eine Innenfläche aufweist, die eine Hohlraumoberfläche (14, 54) bildet,
    wobei der Block (12, 50) eine Basis (20, 60) und einen Kern (22, 62) aufweist,
    der Kern (22, 62) eine Vielzahl von plattenförmigen Stücken (24, 64), welche zusammengestellt ist, und ein Distanzstück (30, 70), das zwischen zwei benachbarten Stücken (24, 64) eingefügt ist, umfasst und
    durch das Distanzstück (30, 70) ein Schlitz zwischen den zwei benachbarten Stücken (24, 64) gebildet ist,
    dadurch gekennzeichnet, dass
    der Kern (22, 62) durch Vergießen fest an der Basis (20, 60) befestigt ist.
  2. Form (2, 46) nach Anspruch 1,
    wobei jedes Stück (24, 64) ein Loch (32) aufweist, und eine Vielzahl von Stücken (24, 64) durch ein Stabelement (26), das durch das Loch (32) hindurchtritt, befestigt ist.
  3. Form (2, 46) nach Anspruch 2,
    wobei ein Wärmeausdehnungskoeffizient des Stabelements (26, 66) kleiner als der des Stücks (24, 64) ist.
  4. Verfahren zum Herstellen eines Reifens, das die Schritte umfasst:
    Beschaffen einer Rohdecke (40) durch Vorformen;
    Einsetzen der Rohdecke (40) in eine Form (2, 46), die einen Block mit einer Innenfläche aufweist, die eine Hohlraumoberfläche (14, 54) bildet, wobei der Block (12, 50) eine Basis (20, 60) und einen Kern (22, 62) aufweist, wobei der Kern (22, 62) eine Vielzahl von plattenförmigen Stücken (24, 64), die zusammengestellt ist, und ein Distanzstück (30, 70) aufweist, das zwischen zwei benachbarten Stücken (24, 64) eingefügt ist, und durch das Distanzstück (30, 70) ein Schlitz zwischen den zwei benachbarten Stücken (24, 64) gebildet ist; wobei der Kern (22, 62) durch Vergießen fest an der Basis (20, 60) befestigt ist; und
    Unterdrucksetzen und Beheizen der Rohdecke (40) in der Form (2, 46).
  5. Verfahren zum Herstellen einer Form (2, 46) zur Verwendung in einem Verfahren zum Herstellen des Reifens nach Anspruch 4, das die Schritte umfasst:
    Einsetzen, in ein Werkzeug, eines Kerns (22, 62), der eine Vielzahl von plattenförmigen Stücken (24, 64), die zusammengestellt ist, und ein Distanzstück (30, 70), das zwischen zwei benachbarten Stücken (24, 64) eingefügt ist, umfasst und einen Schlitz aufweist, der durch das Distanzstück (30, 70) zwischen den benachbarten Stücken (24, 64) gebildet ist;
    Bewirken, dass eine Metallschmelze in das Werkzeug fließt;
    Bilden einer Basis (20, 60) durch eine Koagulation der Metallschmelze und Bilden eines Blocks (12, 50), der durch die Basis (20, 60) und den Kern (22, 62) erzeugt wird, welcher einem Vergießen mit der Basis (20, 60) ausgesetzt wird; und
    Ausführen einer Schneideverarbeitung über den Block (12, 50), wodurch eine Hohlraumoberfläche (14, 54) gebildet wird, zu der hin der Schlitz freigelegt ist.
EP20090003924 2008-05-02 2009-03-18 Form für Reifen Expired - Fee Related EP2113357B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008120161A JP4676509B2 (ja) 2008-05-02 2008-05-02 タイヤ用モールド

Publications (2)

Publication Number Publication Date
EP2113357A1 EP2113357A1 (de) 2009-11-04
EP2113357B1 true EP2113357B1 (de) 2012-10-24

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EP (1) EP2113357B1 (de)
JP (1) JP4676509B2 (de)
CN (1) CN101570042B (de)

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JP5658094B2 (ja) * 2011-06-02 2015-01-21 住友ゴム工業株式会社 タイヤ用モールド
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CN103128515B (zh) * 2011-11-28 2016-04-06 上海新安汽车隔音毡有限公司 一种制作带镶孔模具的方法
JP5864501B2 (ja) * 2013-09-26 2016-02-17 住友ゴム工業株式会社 タイヤ用モールド
CN104552671B (zh) * 2015-01-05 2017-06-09 山东豪迈机械科技股份有限公司 可调节排气间隙的花纹块及无气孔轮胎活络模具
DE102015202143A1 (de) * 2015-02-06 2016-08-11 Herbert Maschinenbau GmbH & Co. KG Reifenformsegment
JP6734652B2 (ja) * 2016-01-15 2020-08-05 株式会社ブリヂストン ゴム物品用モールドの製造方法
CN108340513B (zh) * 2018-02-11 2020-10-02 正新橡胶（中国）有限公司 一种轮胎模具及其使用方法

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JP2005225094A (ja) * 2004-02-13 2005-08-25 Bridgestone Corp タイヤ加硫金型とその製造方法
US20070018349A1 (en) * 2005-07-25 2007-01-25 Chinglin Pan Tire mold and tread
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JP2007144997A (ja) 2005-11-04 2007-06-14 Sumitomo Rubber Ind Ltd タイヤ用モールドの製造方法
JP4847167B2 (ja) * 2006-03-13 2011-12-28 住友ゴム工業株式会社 タイヤ用モールドの製造方法
JP2008087428A (ja) 2006-10-05 2008-04-17 Sumitomo Rubber Ind Ltd タイヤ用モールドの製造方法
JP5265148B2 (ja) 2007-07-20 2013-08-14 住友ゴム工業株式会社 タイヤ用モールドの製造方法

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JP2009269245A (ja) 2009-11-19
CN101570042A (zh) 2009-11-04

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